Guwahati vs Purnia
Side-by-side air quality comparison between Guwahati and Purnia.
Live AQI from Open-Meteo CAMS (~45 km global model, updated hourly). Multi-year history from CPCB station data via aqinow.co pipeline (2016–2024, station-level daily records).
AQI Comparison
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Guwahati averaged an AQI of 123 while Purnia averaged 133 — a 10-point (8%) gap, with Purnia the more polluted and Guwahati the cleaner of the two. On 882 days when both cities reported, Guwahati was cleaner on 521 of them; the average daily gap was 74 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Guwahati logged 0.1% Severe days and 44.9% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Guwahati 105 days, Purnia 14 days.
Year-over-year progress
Guwahati has worsened by 14 AQI points (12.8%) from 2019 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Guwahati reached AQI 420 at Railway Colony (PCBA) on 2023-01-15; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Guwahati spans 4 CPCB stations with a 26-point spread (min 118, max 144); Purnia spans 1 stations with a 0-point spread (min 176, max 176).